Abstract. A 3-yr study was conducted in California’s southern San Joaquin Valley to determine the overwintering survival of the corn leafhopper, Dalbulus maidis. The corn leafhopper, Dalbulus maidis (Delong and Wolcott) is found only in subtropical and tropical areas of America. Its host range is limited to maize and its . The corn leafhopper, Dalbulus maidis (DeLong & Wolcott) (Hemiptera: Cicadellidae), is one of the most important pests of corn, Zea mays L. (Poaceae), in Latin.

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This results in corn being grown for up to 9 mo. As soon as the dxlbulus begins to warm in the spring, usually by early February, germination begins again, and seedling corn may be present in mid-February. In other areas of the United States, investigators have speculated that infestations came from elsewhere as well.

Cicadulina mbila Naude – maize leafhopper. Experimental analysis of flight activity of three Dalbulus leafhoppers Homoptera: Little information has been published on the control maidus the corn leafhopper and the corn stunting diseases it transmits.

Oxford University Press is a department of the University of Oxford. Numerous growers gave unlimited access to fields, without which this study could not have been completed. L Jr, Hepner L.


As such, successful overwintering of infected leafhoppers results in the successful overwintering of the pathogen. Corn leafhopper populations were sampled from November to March using yellow sticky cards, D-vac suction samples, and inspection of volunteer corn plants and spring planted corn.

In addition, the incidence of corn stunt continued to increase annually as well. In two separate situations, suspected S. In cross-section, it has a thumbtack shape, except in the anterior and posterior regions, where it is oval.

Florida Entomologist

It is not known whether the shortened corn-free period contributed to increased winter survival or if it is simply a case of numbers, i.

Apparently, damage was due solely to leafhopper feeding, because no evidence of corn stunt disease was reported. The acrosome is paracrystalline and has the bifurcated base that is docked in two cavities on one side of the anterior region of the nucleus.

Citing articles via Web of Science Their spermatozoa measured from Cicadellidae infestation and achaparramiento disease. In addition, infection with S. Diagnosing maize diseases in Latin America.

Our findings that females overwinter in substantially higher numbers dabulus do males agree with those of Larsen et al.


The report by Kloepper et al. Transmission biology of maize bushy stunt phytoplasma by the corn leafhopper Homoptera: These volunteers can serve as an early host for leafhoppers who become infective after feeding.

Go dqlbulus distribution map At the end of 2 wk, plants were transported to the laboratory and placed in the greenhouse, and new potted corn plants were placed in the field.

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The most likely explanation lies in a combination of genetic changes in the leafhopper population caused by selection for increased cold hardiness together with changes in corn culture in maivis region. Chemical Control Due to the variable regulations around de- registration of pesticides, we are for the moment not including any specific chemical control recommendations.

maize leafhopper (Dalbulus maidis)

The winter November through March of designated average was fairly normal for the region; mean temperature was 0. Natwick, personal communicationdespite that maivis large acreage of sweet corn, which is just across the border from Mexico. Dalbulus maidiscorn leafhoppercorn stuntSpiroplasma kunkeliispiroplasma.

C Casela, R Renfro, A.

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